Stone-cutting machine.



No; 654,743. Patented July 3|, I900.

- F. F. LOEPER.

STONE CUTTING MACHINE.

(No Model.

vidhiv m g FELIX F. LOEPER, OFDRESDEN, GERMANY.

YSTON E-CUTTIN-G MACHINE.

SPECIFICATION forming part of Letters Patent No. 654,743, dated July 31, 1900. Application filed September 3,1898fSerialNo. 690,150. (No model.)

To all whom it may concern:

Be it known that I, FELIX F. LOEPE'R, patent solicitor and civil engineer, a subject of the King of Prussia, German Emperor, residing at Dresden, in the Kingdom of Saxony, 7

German Empire, have invented certain new and useful Improvements in Stone-Cutting Machines; and I do declare hereby that the tion of the invention, which will enable others skilled in the art towhich it appertains to use the same.

My invention relates to asaw-machine con-- sisting of a frame in which a cable-saw moves downward by means of slidingblocks, the.

- movement of which is controlled by patterns or templets. The saw works horizontally across the frame. The toand-fro movement is given to the saw by means of any kind of motive power. plate is moved against the saw horizontally. By the combination of these difierent movements the cable-saw follows the irregular lines of a pattern or templet and cuts the stone, producing the same contour as the design of the templet.

In the accompanying drawings, Figure 1 shows a side view, and Fig. 2 a front view, of the machine.

A is the frame of the machine, and A the center piece of the same. Between the sides of this center piece there is arranged a slid ing block B, capable of moving downwardin accordance with the contour of one or more templets. The center of the block B is provided with an opening G, supporting the sawframe F,to which is fastened the saw-cable g 1'.

On the bottom'of the frame of the machine is fastened a table 0, with a plate D, adapted to run upon angular guides M M, fixed to the table C. The table-plate D, moving against the saw, supports the stone N.

On the sides and below the tableplate D are fixed bracketsO, which hold the templets E. tached to the sliding blocksB. The motive power of the table-plate D is a pulley device L K, with a heavy weight.

To regulate the downward sliding of the block B, so that the movement of the saw is uniform and the saw-cable is prevented from being strained, hydraulic cylinders P P, with The stone resting on a table-- In these templetsE run the pins F,at;-.

the drawings) connects the two cylinders P P to keep the liquid at an even level in both. The waste-pipes R, fitted to the bottom of the cylinders P P, allow the escape of so much water as becomes superfluous through the pressure of the block B. It is also possible by means of a simple cock to control the outfiowof the water and by this means the rapidity of the sinking of the saw.

The working of the machine is as follows: Stone N is placed on the table-plate D and there secured. The saw-arm F is put in motion by means of any kind of motor. The saw. works across the stone N and, sinking with its supporting-block B, follows the lines of the templet E, which again moves with the 7b table-plate D.

Instead of ordinary templets circular tem plets may be used. Instead of one saw-cable more may be used, and in lieu of one block more blocks may be employed.

What I claim as my invention, and desire to secure by Letters Patent, is-- 1. In a sawing-machine, the combination of a saw, with a table-plate supporting the stone to be sawed, a templet fixed to the said tableplate, a sliding block bearingthe saw and adapted to move downward in accordance with the contour of the templet, a brake connected with the said sliding block and adapted to control the downward movement of the same, and means for moving the said tableplate against the saw, substantially as and for. the purpose set forth. I

2. In a sawing-machine the combination 0 a saw, with a table-plate supporting the stone to be sawed, a templet fixed to the said tableplate, a weight adapted to move the said table-plate against the saw, asliding block bearing the saw and adapted to move downward, a pin fixed to the said sliding block and capable of bearing against the contour of the saidtemplet, and a brake connected withthe said sliding block and adapted to controlthe downward movement of the same, substan= tially as and for the purpose set forth.

3. In a sawing-machine, the combination of a saw, with a table-plate for supportingthe material to be sawed, a bracket on the table plate, a templet secured in the bracket, a

IOO

sliding block bearing the sawand adapted to move downward, a pin fixed t0 the sliding block and. capabl of following the contour of the templet, and a brake adapted to control the downward movement of 'shsliding block and consisting of a hydraulic'cylinder and"piston, substantially-as described;

In witness whereof Ihav e hereunto signed my name in thepresence'of two subscribing witnesses. v

FELIX F. LOEPER. Witnesses:

' WILH. LOEPER, r.

E. LOEPER. 

